x86, setup: Store the boot cursor state

Add a field to store the boot cursor state and implement this for VGA on
x86. This can then be used to set the default policy for the boot console.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
LKML-Reference: <1258142222-16092-1-git-send-email-mjg@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/arch/x86/boot/video.c b/arch/x86/boot/video.c
index d42da3802499..f767164cd5df 100644
--- a/arch/x86/boot/video.c
+++ b/arch/x86/boot/video.c
@@ -27,6 +27,12 @@ static void store_cursor_position(void)
 
         boot_params.screen_info.orig_x = oreg.dl;
         boot_params.screen_info.orig_y = oreg.dh;
+
+        if (oreg.ch & 0x20)
+                boot_params.screen_info.flags |= VIDEO_FLAGS_NOCURSOR;
+
+        if ((oreg.ch & 0x1f) > (oreg.cl & 0x1f))
+                boot_params.screen_info.flags |= VIDEO_FLAGS_NOCURSOR;
 }
 
 static void store_video_mode(void)